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Air pollution comes from a variety of sources, including power plants, vehicles, and even natural events like volcanic eruptions. Our Fellows are working at the forefront of measuring air pollutants, assessing the risks they pose to human and environmental health, and figuring out ways to improve air quality nationally and internationally.

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A new report from the US Government Accountability Office (GAO), a top government watchdog, says the yearly cost of climate change to the federal government is tens of billions of dollars and rising rapidly — yet US President Donald Trump still refuses to acknowledge basic science.

However, as alarmed as climate experts remain about the speed at which oceans are warming and weather patterns shifting, public policy professor Joseph Aldy at Harvard's Kennedy School says there's reason to remain, if not optimistic, at least guardedly upbeat about the limits of what the Trump administration can do to reverse recent progress.

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Fellow Holmes Hummel is the Founding Director of Clean Energy Works , a nonprofit organization that seeks to accelerate private capital utility investments in inclusive clean energy solutions. After the Great Recession of the last decade, as government stimulus funds started to wane, utilities...Read more >

Fellow Colleen Callahan is deputy director of the UCLA Luskin Center for Innovation , which conducts research and advises civic partners on the design and implementation of policies, plans and programs with a focus on advancing environmental sustainability. Part of Callahan’s job is to make sure...Read more >

Featured Issue

Air pollution comes from a variety of sources, including power plants, vehicles, and even natural events like volcanic eruptions. Our Fellows are working at the forefront of measuring air pollutants, assessing the risks they pose to human and environmental health, and figuring out ways to improve air quality nationally and internationally.